The two boys who murdered Ana Kriegel will be sentenced next week.

At their sentence hearing today, the court heard Boy A now accepts he caused her death, but Boy B still maintains his innocence.

Following various medical assessments since their convictions in June, the court heard Boy A now accepts that he caused Ana Kriegel's death in a derelict farmhouse in Lucan on May 14th last year - but maintains he is innocent of his second conviction for aggravated sexual assault.

Boy B on the other hand still does not accept the jury's verdict and maintains he did not have any part at all in what happened.

File photo of Ana Kriegel

Through the accounts they gave to experts over the past few months, the court heard there is still a dispute over whose idea it was to meet her, who decided Boy B was to call for her, who brought what to the abandoned house, how her clothing came to be removed and when, who assaulted her and with what, and who smashed her phone when it started to ring.

On behalf of the Kriegel's, Ana's mother Geraldine told the court how their lives have been shattered by what happened to Ana.

She said every family occasion without her is entrenched with pain and sorrow.

The boys will be sentenced next Tuesday morning.

Reporting from Frank Greaney at the Central Criminal Court